@book{208628,
	author = {Petty, Ray.},
	title = {Manejo del salón de clases},
	publisher = {Publicaciones Puertorriqueñas},
	year = {c2008.},
	address = {Hato Rey, PR},
	edition = {5a ed.},
	note = {Translation of: Classroom management : a resource manual for frontline teachers.}
}